San Francisco police have identified the suspect in an attack on OpenAI CEO Sam Altman’s home as Daniel Alejandro Moreno-Gama, a 20-year-old from Spring, Texas. As detailed by the SF Standard, Moreno-Gama was taken into custody on Friday near OpenAI’s Mission Bay headquarters after allegedly threatening to burn down the building, hours after authorities say he threw an incendiary device at Altman’s Russian Hill residence shortly before 4:00 AM.
The device bounced off the house and security personnel extinguished the fire before anyone was injured. Jail records show Moreno-Gama is being held on suspicion of attempted murder, arson, and possession of a destructive device. Prosecutors have not yet filed formal charges.
Moreno-Gama’s digital trail points to months of escalating fixation on the risks of artificial intelligence. Using the screenname “Butlerian Jihadist,” a reference to the Dune science fiction series, in which humanity rises against thinking machines, he was active in the Discord server for the activist group PauseAI. In December, he posted that humanity was close to midnight and that it was time to act. A moderator responded immediately, warning him that advocating for violence was grounds for an instant ban.
His writing framed AI as an extinction-level threat and named Altman specifically as a primary target of his anger
Beyond Discord, Moreno-Gama ran a Substack where he published essays framing AI development as a path to human extinction. He described tech leaders as sociopathic and reckless and specifically labeled Altman a pathological liar gambling with humanity’s future. His posts cited warnings from figures including Elon Musk and AI researcher Eliezer Yudkowsky, who has publicly argued that the pursuit of artificial general intelligence could result in the death of everyone on Earth.
Communications researcher Nirit Weiss-Blatt, who preserved Moreno-Gama’s posts after his accounts were deleted, said his case illustrates how doom-focused online environments can accelerate radicalization in individuals already dealing with anxiety or depression, even when the activist groups themselves stop short of calling for violence. The attack has added to a pattern of physical threats against tech executives that the industry has been tracking since the fatal shooting of UnitedHealthcare CEO Brian Thompson in December 2024.
Security experts have noted that executives are particularly vulnerable when their personal addresses are publicly accessible, and many companies have since moved to harden physical security protocols. Amid a broader climate of high-profile individuals facing public hostility, a separate controversy this week saw a media figure publicly attacked in harsh terms by someone in a position of power, drawing its own wave of reaction online.
In response to the attack, Altman published a blog post stating that he has empathy for those with sincere concerns about AI, while calling for civil debate and fewer explosions in fewer homes. OpenAI spokesperson Jamie Radice confirmed the company is cooperating with law enforcement and expressed appreciation for the rapid response from the San Francisco Police Department. Groups including Stop AI publicly condemned the attack and distanced themselves from Moreno-Gama.
In a week when a public figure’s unexpected statement drew widespread coverage, Altman’s choice to respond publicly rather than stay silent was itself seen as a deliberate move.
Published: Apr 12, 2026 09:45 am